SOURCE: engine light
Short the test terminal, and read blinking engine light blinks, count them they will be fast and pause and be fast again each code is 2 digits long. This will help me to solve your problem. Thanks
SOURCE: 93' chevy 4.3 V6 vortec. engine problem
fuel lines inside the intake plhenum may be cracked and leaking inside the plhenum. same thing happened to my 1992.sonoma. they are made of a plastic material and tend to crack right in the bend of these lines.
SOURCE: 1998 Chevy 1500 V6. Auto.
It may just need a tune up (new plugs/wires/fuel and air filters). On the other hand it may bad fuel to air ratio. Why your check engine light doesn't come on is a little odd. You might want to check your O2 sensors, just my .02.
SOURCE: I have a1997 suburban 5.7 eng. hesitates and backfires on rapid acceleration.
check that your map sensor has direct (unregulated) vacuum. I don't believe that the purge solenoid can create that kind of problem.
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